70 days. NON-GMO, open pollinated, heirloom. Klondike Watermelons grow into large oblong fruits that taste bright, sweet and perfectly melts in your mouth. These non-GMO watermelon seeds will need an average-to-longer growing season. First bred in California, these durable plants can withstand slightly cooler summer temperatures and are able to adapt and tolerate a sunburn! Heirloom watermelons such as these prefer a temperature range of 70-85℉. Although these melons are seeded, the texture of Klondike Striped Blue Ribbon Watermelons are smooth and produce a less fibrous fruit. These heirloom plants can grow up to 30lbs! Klondike Watermelons have a jade and light-green exterior with a thin rind and rose-red flesh. Melon seeds that are quality and non-GMO like Klondike Striped Blue Ribbon Watermelons produce an abundant crop for a crisp end-of-summer delicacy.